Direct flow thermal exchange experimental device
The amount of heat transfer due to forced convection is measured, and the cooling rate of a heated object in the airflow is observed. The air inhaled from the bell mouth is released into the atmosphere after passing through the experimental area (pin-shaped module), diffusion body, constant-speed fan and flow control valve, and silencer. A thermocouple is used to measure the temperature of the incoming air at the wind tunnel entrance, and there are two static pressure ports and a pitot tube mounting point before and after the pin-shaped module. The pitot tube can be mounted either in front or behind to measure the velocity distribution in the cross-sectional direction. In the experimental area, pins are arranged perpendicular to the wind direction, and one of them can be removed and replaced with a pin-type heater. The pin-type heater is equipped with a thermocouple, allowing for the measurement of heat transfer based on the time it takes for the temperature to decrease and the wind speed. The control unit has thermocouple connection ports (two), pressure connection ports (differential pressure, two), and a heater power switch, and it digitally displays the temperatures from the two locations, the differential pressure before and after the pin-shaped module, and the differential pressure between the total pressure and static pressure of the pitot tube. By using the optional (sold separately) data automatic collection system VDAS-B, various data can be collected and analyzed in real-time on a PC (sold separately).
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basic information
TE93 specifications Wind tunnel dimensions and weight: 1530 x 600 x H1170, approximately 55kg Experimental area: 125 x 125mm Control device dimensions and weight: 615 x 360 x H220, approximately 17kg Power supply: AC100V/10A or single-phase 200V/5A 50/60Hz Pin-type heater: 1 piece, made of copper, diameter 12.4mm, built-in K-type thermocouple Operating temperature range: +5°C to +40°C
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Applications/Examples of results
Experimental items: Measurement of pressure loss using pin-shaped modules Calculation of inlet velocity and average velocity through the pins Measurement of cooling rate of cylindrical copper heaters Calculation of heat transfer coefficients of copper heaters at various positions Measurement of velocity distribution downstream of the pins Conversion to dimensionless numbers (Using Nusselt, Prandtl, and Reynolds equations) Comparison of results and creation of heat transfer coefficient curves Delivery performance: Suzuka National College of Technology
Detailed information
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Independent input of calculation formulas and layout changes are possible. Screen diagram of VDAS-F (sold separately).
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Detailed map of the experimental area
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Pin-type heater detailed diagram
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Pressure measurement example
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Company information
Megakemu designs, manufactures, and imports various experimental and practical equipment for universities, junior colleges, technical colleges, high schools, and vocational schools across the country. While the world has made advancements in various fields, it seems that our Earth's environment is being disrupted by ourselves and is approaching its limits. The world is seeking new Japanese technologies that coexist with the Earth's environment.